objectives, turned south, and returned to their bases by late afternoon. The captured PAVN soldier identified his unit as an element of the 138th Regiment which had assumed control of the 27th Independent Regiment's area of operations, due to the heavy casualties suffered by the regiment in recent months. In late September heavy monsoon rains had swollen the Ben Hai River, forcing remnants of the PAVN 320th Division and independent regiments north across the river, but military intelligence indicated that some groups had been trapped in the south by the rising water. On 26 September Companies B, C, and D, 11th Infantry moved out from positions at C-2 and C-2 Bridge. In coordination with the ARVN 2nd and 3rd Battalions, 2nd Regiment, and the 3rd Marines, the companies moved to a position west of Con Thien and then attacked north across the southern boundary of the DMZ, toward the Dong Be Lao mountain complex. During an 8-day patrol into the DMZ, they encountered minimal opposition from the PAVN rearguard. Searches of numerous bunkers and other complexes indicated that the PAVN had only recently abandoned the positions. On 11 October a brigade mechanized infantry and tank force, composed of Companies B and C, 61st Infantry and Company B, 77th Armored, engaged a platoon of PAVN in heavily fortified bunkers, 2.5 km northeast of Con Thien. The PAVN used RPGs and 60mm mortars to knock out 3 M48s and one M113. Mines disabled another two M48s and one M113, killing 3 and wounding 20. After five hours of battle 26 PAVN were killed. Despite heavy rain during October, ground and aerial reconnaissance missions indicated the presence of a sizable PAVN force south of the Ben Hai River between Gio Linh and Con Thien. On 23 October the brigade task force, composed of three companies of the dismounted 1/61st Infantry attacked north from A-3 and Con Thien into the DMZ and then eastward along the Ben Hai River toward the 2nd ARVN Regiment and Company H, 9th Marines which had earlier trapped a PAVN force and claiming to have killed 112. As the task force continued eastward during the 24th, through Kinh Mon, Tan Mon, and An Xa along an abandoned railroad, Company A engaged a PAVN platoon, killing seven. At 08:30 on 25 October, Company A encountered a PAVN battalion in well-fortified bunkers, while Company B came under heavy small arms and